Improved enamel



UNITED STATES THEQDQR L. ,OEST, OF BERLIN, PRUSSIA, ASSIGNOR TO HENRY MAURER PATENT OFFICE.

v AND ADAM WEBER, OF NEW YORK CITY.

IMPROVED ENAMEL.

Specification forming part of Letters Patent No. 418,500, dated June 27, 186:").

the retort, and the retort receives at the same a time a solidity whereby the exhausting operationmay be altogether dispensed with.

The enamel consists of three and onethird (35 parts of chemical pure clay, (alumni pura,) three and two-thirds (3 5-) parts of chalk, five (5) parts of feldspar, six and one-third (figl parts of flint, three and two-thirds (313) parts of heavy spar or baryta, four (4) parts of white glass,

and three (3) parts of silicate of soda or soluble glass. The different ingredients are powdered finely and then mixed and roasted. When this manipulation is completed the substance is again powdered and finely ground and the coarser particles separated by Water and then boiled for a length of time until the substance forms nearly a solid mass or paste.-

This compound is then exposed to the atmosphere for three days, and is then again finely powdered, after which the same is ready for application.

What I claim as my invention, and desire to secure by Letters Patent, is-

An enamel-powder composed of the (litterent parts mentioned, and in proportions substantially as specified and set forth. 7

THEODOR L. OEST. Witnesses:

HENRY E. ROEDER, DAVID MOSHER. 

